CN210371179U

CN210371179U - Single-stage single-suction horizontal centrifugal pump

Info

Publication number: CN210371179U
Application number: CN201920517120.7U
Authority: CN
Inventors: 董永谱
Original assignee: Zhejiang Jiangneng Pump Valve Co Ltd
Current assignee: Zhejiang Jiangneng Pump Valve Co Ltd
Priority date: 2019-04-12
Filing date: 2019-04-12
Publication date: 2020-04-21
Anticipated expiration: 2029-04-12

Abstract

The utility model discloses a single-stage single-suction horizontal centrifugal pump, which comprises a pump body, the impeller, the sealing ring, the impeller nut, seal part, the pump cover, the intermediate support, axle and suspension part, be fixed with the base on the pump body, suspension part passes through the tang to be fixed on the intermediate support, suspension part supports on the base, seal part establishes the top at the axle, the pump cover is established in seal part's the outside, the pump cover presss from both sides tightly in the centre of the pump body with intermediate support connected, the left side of axle is equipped with the impeller nut, the left side top of impeller nut is equipped with the sealing ring, the top of sealing ring is equipped with the impeller, be equipped with extension. The suspension component is fixed on the middle bracket through the rabbet and is supported on the base by the suspension bracket. For dismantling the convenience, designed the extension shaft coupling, only need pull down the middle connector of extension shaft coupling, can withdraw from the rotor part and overhaul, alleviateed maintenance workman's labour greatly.

Description

Single-stage single-suction horizontal centrifugal pump

Technical Field

The utility model relates to a centrifugal pump especially relates to a single-stage single suction horizontal centrifugal pump.

Background

The basic structure of the centrifugal pump is composed of six parts, namely an impeller, a pump body, a pump shaft, a bearing, a sealing ring and a stuffing box. 1. The impeller is the core part of the centrifugal pump, the rotating speed of the impeller is higher than the output force, the blades on the impeller play a main role, and the impeller passes through a static balance experiment before assembly. The inner and outer surfaces on the impeller are required to be smooth so as to reduce the friction loss of water flow; 2. the pump body is also called pump shell, and is the main body of the water pump. The supporting and fixing function is realized, and the supporting and fixing function is connected with a bracket for mounting a bearing; 3. the pump shaft is connected with the motor through the coupler and transmits the torque of the motor to the impeller, so that the pump shaft is a main component for transmitting mechanical energy; 4. the sliding bearing uses transparent oil as lubricant and is added to the oil level line. Too much oil will seep out along the pump shaft, too few bearings will burn out due to overheating, which causes accidents! The temperature of the bearing is at most 85 ℃ in the running process of the water pump, and generally runs at about 60 ℃; 5. the sealing ring is also called leakage reducing ring; 6. the stuffing box mainly comprises stuffing, a water seal ring, a stuffing cylinder, a stuffing gland and a water seal pipe. The stuffing box mainly has the function of sealing a gap between the pump shell and the pump shaft, so that water in the pump is prevented from flowing to the outside and air outside is prevented from entering the pump. Always maintain vacuum in the pump! When the pump shaft rubs with the stuffing to generate heat, the water is blocked by the water sealing pipe into the water sealing ring to cool the stuffing! And keeping the normal operation of the water pump. The inspection of the stuffing box during the operational cycle inspection of the water pump is therefore of particular interest! The packing is replaced after about 600 hours of operation.

The single-stage single-suction centrifugal pump adopts the most advanced hydraulic model, is designed according to the performance parameters of the is-type centrifugal pump and the unique structural combination of the vertical pump, and is strictly designed and manufactured according to international iso2858, and the shaft seal of the single-stage single-suction centrifugal pump is a hard alloy mechanical sealing device, so that the single-stage single-suction centrifugal pump has the characteristics of high efficiency, energy conservation, reliable performance, convenience in installation and use and the like. The IS type single-stage single-suction centrifugal pump has the design characteristics that: the IS type series performance range IS calculated according to design points: rotating speed: 2900r/min or 1450r/min suction port diameter: 50-200 mm flow: 6.3-400 m3/h lift: 5-125 m, sealing mode: packing sealing and mechanical sealing. The material is as follows: and (4) casting iron.

The single-suction horizontal centrifugal pump in the prior art is inconvenient to disassemble, brings great trouble to maintenance, and greatly increases the labor force of maintenance workers.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a single-stage single suction horizontal centrifugal pump to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a single-stage single-suction horizontal centrifugal pump, includes the pump body, impeller, sealing ring, impeller nut, seal part, pump cover, intermediate support, axle and suspension part, be fixed with the base on the pump body, the suspension part passes through the tang to be fixed on intermediate support, the suspension part supports on the base, seal part establishes the top of axle, the pump cover is established seal part's the outside, the pump cover presss from both sides tightly the pump body with the centre that intermediate support connects, the left side of axle is equipped with impeller nut, impeller nut's left side top is equipped with the sealing ring, the top of sealing ring is equipped with the impeller, be equipped with the extension shaft coupling on the pump body.

Further, the pump body is axially sucked and radially discharged.

Further, the sealing form of the pump body is axial sealing or mechanical sealing.

Further, the pump body adopts a sealed cavity specified in ISO 3069.

Further, the pump cover is fixed on the middle support through a seam allowance.

Furthermore, the suction inlet and the discharge outlet of the pump body are connected through flanges.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses well pump cover passes through the tang to be fixed on the intermediate strut, then presss from both sides the pump cover tight in the centre through being connected of the pump body and intermediate strut tang. The pump body is axially sucked, radially discharged and in a foot supporting type, and can be directly fixed on the base. The suspension component is fixed on the middle bracket through the rabbet and is supported on the base by the suspension bracket. In order to be convenient to disassemble, the lengthened coupler is designed, and the inlet and outlet connecting pipelines, the system body and the motor can be disassembled without disassembling during maintenance. Only need pull down the middle connector of extension shaft coupling, can withdraw from the rotor part and overhaul, alleviateed maintenance workman's labour greatly.

Drawings

FIG. 1 is a schematic view of a single-stage single-suction horizontal centrifugal pump according to the present invention;

the reference numerals are explained below:

in the figure: 1. a pump body; 2. an impeller; 3. a seal ring; 4. an impeller nut; 5. a sealing member; 6. A pump cover; 7. a middle support; 8. a shaft; 9. a suspension component.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In order to facilitate understanding of the present invention, the present invention will be described more fully with reference to the accompanying drawings, in which several embodiments of the present invention are shown, but the present invention can be implemented in different forms, and is not limited to the embodiments described in the text, but rather, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the use of the term knowledge in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the present invention provides a technical solution:

the utility model provides a single-stage single suction horizontal centrifugal pump, includes the pump body 1, impeller 2, sealing ring 3, impeller nut 4, seal part 5, pump cover 6, intermediate support 7, axle 8 and suspension part 9, be fixed with the base on the pump body 1, suspension part 9 passes through the tang to be fixed on intermediate support 7, suspension part 9 supports on the base, seal part 5 is established the top of axle 8, pump cover 6 is established the outside of seal part 5, pump cover 6 presss from both sides tightly pump body 1 with the centre that intermediate support 7 is connected, the left side of axle 8 is equipped with impeller nut 4, impeller nut 4's left side top is equipped with sealing ring 3, the top of sealing ring 3 is equipped with impeller 2, be equipped with the extension shaft coupling on the pump body 1.

In order to further improve the use function of the single-stage single-suction horizontal centrifugal pump, the pump body 1 sucks in the axial direction 8 and discharges in the radial direction.

In order to further improve the use function of the single-stage single-suction horizontal centrifugal pump, the sealing form of the pump body 1 is an axial 8-direction sealing or a mechanical sealing.

In order to further improve the use function of the single-stage single-suction horizontal centrifugal pump, the pump body 1 adopts a sealed cavity specified in ISO 3069.

In order to further improve the use function of the single-stage single-suction horizontal centrifugal pump, the pump cover 6 is fixed on the middle bracket 7 through a spigot.

In order to further improve the use function of the single-stage single-suction horizontal centrifugal pump, the suction inlet and the discharge outlet of the pump body 1 are connected through flanges.

The utility model discloses a theory of operation: the utility model discloses well pump cover passes through 6 tang fixes on intermediate strut 7, then presss from both sides pump cover 6 tightly in the centre through being connected of the pump body 1 and the 7 tang of intermediate strut. The pump body 1 is axially sucked, radially discharged and in a foot-supporting type, and can be directly fixed on a base. The suspension member 9 is fixed to the intermediate bracket through the seam allowance and supported on the base by the suspension bracket. In order to be convenient to disassemble, the lengthened coupler is designed, and the inlet and outlet connecting pipelines, the system body and the motor can be disassembled without disassembling during maintenance. Only need pull down the middle connector of extension shaft coupling, can withdraw from the rotor part and overhaul, alleviateed maintenance workman's labour greatly.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a single-stage single suction horizontal centrifugal pump, includes the pump body (1), impeller (2), sealing ring (3), impeller nut (4), seal part (5), pump cover (6), intermediate support (7), axle (8) and suspension part (9), its characterized in that: the pump body (1) is fixed with a base, suspension part (9) is fixed on middle support (7) through the tang, suspension part (9) support is in on the base, establish sealing member (5) the top of axle (8), establish pump cover (6) the outside of sealing member (5), pump cover (6) clamp is in the pump body (1) with the centre that middle support (7) are connected, the left side of axle (8) is equipped with impeller nut (4), the left side top of impeller nut (4) is equipped with sealing ring (3), the top of sealing ring (3) is equipped with impeller (2) be equipped with the extension shaft coupling on the pump body (1).

2. The single-stage, single-suction horizontal centrifugal pump of claim 1, wherein: the pump body (1) is used for sucking in the axial direction and discharging in the radial direction through the shaft (8).

3. The single-stage, single-suction horizontal centrifugal pump of claim 1, wherein: the sealing form of the pump body (1) is axial (8) sealing or mechanical sealing.

4. The single-stage, single-suction horizontal centrifugal pump of claim 1, wherein: the pump body (1) adopts a sealed cavity specified in ISO 3069.

5. The single-stage, single-suction horizontal centrifugal pump of claim 1, wherein: the pump cover (6) is fixed on the middle support (7) through a spigot.

6. The single-stage, single-suction horizontal centrifugal pump of claim 1, wherein: the suction inlet and the discharge outlet of the pump body (1) are connected through flanges.